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A parent radioactive nucleus A (decay constant $D_{A}$ ) converts into a radioactive nucleus B of decay constant $D_{B}$ . Initially number of atoms of B is zero. At any time $N_{A} {, N}_{B}$ are number of atoms of nuclei A and B respectively. Then maximum value of $N_{B}$ is

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Correct option is A

[Concept]: NB reaches maximum when activity of A and B will be sameActivity=R=λN where λ is decay constant If R is same then λ1N1=λ2N2[Step 1]: i.e. DANA=DBNB[Step 2]: ∴NB=DANADB

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A parent radioactive nucleus A (decay constant DA) converts into a radioactive nucleus B of decay constant DB. Initially number of atoms of B is zero. At any time NA, NB are number of atoms of nuclei A and B respectively. Then maximum value of NB is

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A parent radioactive nucleus A (decay constant $D_{A}$ ) converts into a radioactive nucleus B of decay constant $D_{B}$ . Initially number of atoms of B is zero. At any time $N_{A} {, N}_{B}$ are number of atoms of nuclei A and B respectively. Then maximum value of $N_{B}$ is